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AM3352: data abort during kernel load

Part Number: AM3352


Tool/software:

U-Boot SPL 2022.01 (Jan 10 2022 - 18:46:34 +0000)
Trying to boot from MMC1



U-Boot 2022.01 (Jan 10 2022 - 18:46:34 +0000)

CPU : AM335X-GP rev 2.1
Model: TI AM335x EVM
DRAM: 512 MiB
WDT: Started wdt@44e35000 with servicing (60s timeout)
NAND: 256 MiB
MMC: OMAP SD/MMC: 0
Loading Environment from FAT... OK
header.name: A335pmad
#14# ### ### common layout reading count: 0
I2C device detected at address CONFIG_SYS_I2C_EEPROM_ADDR
Incorrect common_layout crc in EEPROM: cur 0xaf89cc64 ref 0xffffffff
Could not read commonLayout.
#14# ### ### common layout reading count: 1
I2C device detected at address CONFIG_SYS_I2C_EEPROM_ADDR
EEPROM data to bigCould not read softwareInfoBlockLayout.
Hit any key to stop autoboot: 0
Board Name: A335pmad and Sub-board:
FOUND board**
WARNING: Cannot find subboard_name! Assuming am335x-evmsk
Using device tree blob: am335x-evmsk.dtb
Using device tree blob: am335x-evmsk.dtb
switch to partitions #0, OK
mmc0 is current device
SD/MMC found on device 0
7845648 bytes read in 565 ms (13.2 MiB/s)
87448 bytes read in 10 ms (8.3 MiB/s)
## Booting kernel from Legacy Image at 80200000 ...
Image Name: Linux-5.15.54-yocto-standard
Created: 2022-07-14 18:52:26 UTC
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 7845584 Bytes = 7.5 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
## Flattened Device Tree blob at 80f80000
Booting using the fdt blob at 0x80f80000
Loading Kernel Image
Loading Device Tree to 9df01000, end 9df19597 ... OK
data abort
pc : [<9ffb3d48>] lr : [<9ff65ffd>]
reloc pc : [<8085fd48>] lr : [<80811ffd>]
sp : 9df1dee0 ip : 00000000 fp : 9df01668
r10: 4a101000 r9 : 9df33eb0 r8 : 00000000
r7 : 4a101000 r6 : 9ffe364c r5 : 9df46da0 r4 : 00000000
r3 : 00000007 r2 : 00000020 r1 : 9df46da0 r0 : 00000008
Flags: nzCv IRQs off FIQs on Mode SVC_32 (T)
Code: 2200 701a bd30 1e43 (f813) 2f01
Resetting CPU ...



How to solve this 'data abort'. With old FW (Uboot 2014) it works

U-Boot SPL 2014.04 (Aug 14 2023 - 10:25:46)
pmad module found
pmad 512M DDR3
reading u-boot.img
reading u-boot.img


U-Boot 2014.04 (Aug 14 2023 - 10:25:46)
genn Version 1.0.9

I2C: ready
DRAM: 512 MiB
NAND: 256 MiB
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
EEPROM data to bigCould not read softwareInfoBlockLayout.
unknown board
Hit any key to stop autoboot: 0
WARNING: Could not determine device tree to use
mmc0 is current device
SD/MMC found on device 0
4539584 bytes read in 281 ms (15.4 MiB/s)
32865 bytes read in 25 ms (1.3 MiB/s)
## Booting kernel from Legacy Image at 80200000 ...
Image Name: Linux-4.19.59-rt24
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 4539520 Bytes = 4.3 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
## Flattened Device Tree blob at 80f80000
Booting using the fdt blob at 0x80f80000
Loading Kernel Image ... OK
Loading Device Tree to 9f738000, end 9f743060 ... OK

Starting kernel ...




  • There's tons of changes from u-boot 2014 to u-boot 2022, for example, DT are incrementally added.
    Have you adapted your SW for u-boot 2022?
    Best,
    -Hong

  • Thanks. Adapted SW for code base of u-boot 2022 and trying to use DT from 2014. Is there a better approach?

  • One option is using JTAG to debug the data abort issue.
    Do we have JTAG access on your board?
    Best,
    -Hong

  • Thank you! Could OpenOCD be suitable on Mac with JTAG XDS100v2? There is no CS for Silicon Mac available yet?

  • I'm attaching u-boot JTAG debugging with T32 for your reference. where I used AM437x as an example, but the same flow is applicable to AM335x.
    I think OpenOCD may work also, but I've not used it myself.
    Best,
    -Hong

    6712.u-boot_boot_flow.pdf

    0458.u-boot_kernel.pdf

  • /*
     * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
     *
     * This program is free software; you can redistribute it and/or modify
     * it under the terms of the GNU General Public License version 2 as
     * published by the Free Software Foundation.
     */
    /dts-v1/;
    
    #include "am33xx.dtsi"
    #include <dt-bindings/interrupt-controller/irq.h>
    
    / {
    	model = "TI AM335x EVM";
    	compatible = "ti,am335x-evm", "ti,am33xx";
    
    	chosen {
    		stdout-path = &uart0;
    		tick-timer = &timer2;
    	};
    
    	cpus {
    		cpu@0 {
    			cpu0-supply = <&vdd1_reg>;
    		};
    	};
    
    	memory {
    		device_type = "memory";
    		reg = <0x80000000 0x10000000>; /* 256 MB */
    	};
    
    	vbat: fixedregulator@0 {
    		compatible = "regulator-fixed";
    		regulator-name = "vbat";
    		regulator-min-microvolt = <5000000>;
    		regulator-max-microvolt = <5000000>;
    		regulator-boot-on;
    	};
    
    	lis3_reg: fixedregulator@1 {
    		compatible = "regulator-fixed";
    		regulator-name = "lis3_reg";
    		regulator-boot-on;
    	};
    
    	wlan_en_reg: fixedregulator@2 {
    		compatible = "regulator-fixed";
    		regulator-name = "wlan-en-regulator";
    		regulator-min-microvolt = <1800000>;
    		regulator-max-microvolt = <1800000>;
    
    		/* WLAN_EN GPIO for this board - Bank1, pin16 */
    		gpio = <&gpio1 16 0>;
    
    		/* WLAN card specific delay */
    		startup-delay-us = <70000>;
    		enable-active-high;
    	};
    
    	matrix_keypad: matrix_keypad@0 {
    		compatible = "gpio-matrix-keypad";
    		debounce-delay-ms = <5>;
    		col-scan-delay-us = <2>;
    
    		row-gpios = <&gpio1 25 GPIO_ACTIVE_HIGH		/* Bank1, pin25 */
    			     &gpio1 26 GPIO_ACTIVE_HIGH		/* Bank1, pin26 */
    			     &gpio1 27 GPIO_ACTIVE_HIGH>;	/* Bank1, pin27 */
    
    		col-gpios = <&gpio1 21 GPIO_ACTIVE_HIGH		/* Bank1, pin21 */
    			     &gpio1 22 GPIO_ACTIVE_HIGH>;	/* Bank1, pin22 */
    
    		linux,keymap = <0x0000008b	/* MENU */
    				0x0100009e	/* BACK */
    				0x02000069	/* LEFT */
    				0x0001006a	/* RIGHT */
    				0x0101001c	/* ENTER */
    				0x0201006c>;	/* DOWN */
    	};
    
    	gpio_keys: volume_keys@0 {
    		compatible = "gpio-keys";
    		autorepeat;
    
    		switch@9 {
    			label = "volume-up";
    			linux,code = <115>;
    			gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
    			gpio-key,wakeup;
    		};
    
    		switch@10 {
    			label = "volume-down";
    			linux,code = <114>;
    			gpios = <&gpio0 3 GPIO_ACTIVE_LOW>;
    			gpio-key,wakeup;
    		};
    	};
    
    	backlight {
    		compatible = "pwm-backlight";
    		pwms = <&ecap0 0 50000 0>;
    		brightness-levels = <0 51 53 56 62 75 101 152 255>;
    		default-brightness-level = <8>;
    	};
    
    	panel {
    		compatible = "ti,tilcdc,panel";
    		status = "okay";
    		pinctrl-names = "default";
    		pinctrl-0 = <&lcd_pins_s0>;
    		panel-info {
    			ac-bias           = <255>;
    			ac-bias-intrpt    = <0>;
    			dma-burst-sz      = <16>;
    			bpp               = <32>;
    			fdd               = <0x80>;
    			sync-edge         = <0>;
    			sync-ctrl         = <1>;
    			raster-order      = <0>;
    			fifo-th           = <0>;
    		};
    
    		display-timings {
    			800x480p62 {
    				clock-frequency = <30000000>;
    				hactive = <800>;
    				vactive = <480>;
    				hfront-porch = <39>;
    				hback-porch = <39>;
    				hsync-len = <47>;
    				vback-porch = <29>;
    				vfront-porch = <13>;
    				vsync-len = <2>;
    				hsync-active = <1>;
    				vsync-active = <1>;
    			};
    		};
    	};
    
    	sound {
    		compatible = "ti,da830-evm-audio";
    		ti,model = "AM335x-EVM";
    		ti,audio-codec = <&tlv320aic3106>;
    		ti,mcasp-controller = <&mcasp1>;
    		ti,codec-clock-rate = <12000000>;
    		ti,audio-routing =
    			"Headphone Jack",       "HPLOUT",
    			"Headphone Jack",       "HPROUT",
    			"LINE1L",               "Line In",
    			"LINE1R",               "Line In";
    	};
    };
    
    &am33xx_pinmux {
    	pinctrl-names = "default";
    	pinctrl-0 = <&matrix_keypad_s0 &volume_keys_s0 &clkout2_pin>;
    
    	matrix_keypad_s0: matrix_keypad_s0 {
    		pinctrl-single,pins = <
    			0x54 (PIN_OUTPUT_PULLDOWN | MUX_MODE7)	/* gpmc_a5.gpio1_21 */
    			0x58 (PIN_OUTPUT_PULLDOWN | MUX_MODE7)	/* gpmc_a6.gpio1_22 */
    			0x64 (PIN_INPUT_PULLDOWN | MUX_MODE7)	/* gpmc_a9.gpio1_25 */
    			0x68 (PIN_INPUT_PULLDOWN | MUX_MODE7)	/* gpmc_a10.gpio1_26 */
    			0x6c (PIN_INPUT_PULLDOWN | MUX_MODE7)	/* gpmc_a11.gpio1_27 */
    		>;
    	};
    
    	volume_keys_s0: volume_keys_s0 {
    		pinctrl-single,pins = <
    			0x150 (PIN_INPUT_PULLDOWN | MUX_MODE7)	/* spi0_sclk.gpio0_2 */
    			0x154 (PIN_INPUT_PULLDOWN | MUX_MODE7)	/* spi0_d0.gpio0_3 */
    		>;
    	};
    
    	i2c0_pins: pinmux_i2c0_pins {
    		pinctrl-single,pins = <
    			0x188 (PIN_INPUT_PULLUP | MUX_MODE0)	/* i2c0_sda.i2c0_sda */
    			0x18c (PIN_INPUT_PULLUP | MUX_MODE0)	/* i2c0_scl.i2c0_scl */
    		>;
    	};
    
    	i2c1_pins: pinmux_i2c1_pins {
    		pinctrl-single,pins = <
    			0x158 (PIN_INPUT_PULLUP | MUX_MODE2)	/* spi0_d1.i2c1_sda */
    			0x15c (PIN_INPUT_PULLUP | MUX_MODE2)	/* spi0_cs0.i2c1_scl */
    		>;
    	};
    
    	uart0_pins: pinmux_uart0_pins {
    		pinctrl-single,pins = <
    			0x170 (PIN_INPUT_PULLUP | MUX_MODE0)	/* uart0_rxd.uart0_rxd */
    			0x174 (PIN_OUTPUT_PULLDOWN | MUX_MODE0)	/* uart0_txd.uart0_txd */
    		>;
    	};
    
    	uart1_pins: pinmux_uart1_pins {
    		pinctrl-single,pins = <
    			0x178 (PIN_INPUT | MUX_MODE0)		/* uart1_ctsn.uart1_ctsn */
    			0x17C (PIN_OUTPUT_PULLDOWN | MUX_MODE0)	/* uart1_rtsn.uart1_rtsn */
    			0x180 (PIN_INPUT_PULLUP | MUX_MODE0)	/* uart1_rxd.uart1_rxd */
    			0x184 (PIN_OUTPUT_PULLDOWN | MUX_MODE0)	/* uart1_txd.uart1_txd */
    		>;
    	};
    
    	clkout2_pin: pinmux_clkout2_pin {
    		pinctrl-single,pins = <
    			0x1b4 (PIN_OUTPUT_PULLDOWN | MUX_MODE3)	/* xdma_event_intr1.clkout2 */
    		>;
    	};
    
    	nandflash_pins_s0: nandflash_pins_s0 {
    		pinctrl-single,pins = <
    			0x0 (PIN_INPUT_PULLUP | MUX_MODE0)	/* gpmc_ad0.gpmc_ad0 */
    			0x4 (PIN_INPUT_PULLUP | MUX_MODE0)	/* gpmc_ad1.gpmc_ad1 */
    			0x8 (PIN_INPUT_PULLUP | MUX_MODE0)	/* gpmc_ad2.gpmc_ad2 */
    			0xc (PIN_INPUT_PULLUP | MUX_MODE0)	/* gpmc_ad3.gpmc_ad3 */
    			0x10 (PIN_INPUT_PULLUP | MUX_MODE0)	/* gpmc_ad4.gpmc_ad4 */
    			0x14 (PIN_INPUT_PULLUP | MUX_MODE0)	/* gpmc_ad5.gpmc_ad5 */
    			0x18 (PIN_INPUT_PULLUP | MUX_MODE0)	/* gpmc_ad6.gpmc_ad6 */
    			0x1c (PIN_INPUT_PULLUP | MUX_MODE0)	/* gpmc_ad7.gpmc_ad7 */
    			0x70 (PIN_INPUT_PULLUP | MUX_MODE0)	/* gpmc_wait0.gpmc_wait0 */
    			0x74 (PIN_INPUT_PULLUP | MUX_MODE7)	/* gpmc_wpn.gpio0_30 */
    			0x7c (PIN_OUTPUT | MUX_MODE0)		/* gpmc_csn0.gpmc_csn0  */
    			0x90 (PIN_OUTPUT | MUX_MODE0)		/* gpmc_advn_ale.gpmc_advn_ale */
    			0x94 (PIN_OUTPUT | MUX_MODE0)		/* gpmc_oen_ren.gpmc_oen_ren */
    			0x98 (PIN_OUTPUT | MUX_MODE0)		/* gpmc_wen.gpmc_wen */
    			0x9c (PIN_OUTPUT | MUX_MODE0)		/* gpmc_be0n_cle.gpmc_be0n_cle */
    		>;
    	};
    
    	ecap0_pins: backlight_pins {
    		pinctrl-single,pins = <
    			0x164 0x0	/* eCAP0_in_PWM0_out.eCAP0_in_PWM0_out MODE0 */
    		>;
    	};
    
    	cpsw_default: cpsw_default {
    		pinctrl-single,pins = <
    			/* Slave 1 */
    			0x114 (PIN_OUTPUT_PULLDOWN | MUX_MODE2)	/* mii1_txen.rgmii1_tctl */
    			0x118 (PIN_INPUT_PULLDOWN | MUX_MODE2)	/* mii1_rxdv.rgmii1_rctl */
    			0x11c (PIN_OUTPUT_PULLDOWN | MUX_MODE2)	/* mii1_txd3.rgmii1_td3 */
    			0x120 (PIN_OUTPUT_PULLDOWN | MUX_MODE2)	/* mii1_txd2.rgmii1_td2 */
    			0x124 (PIN_OUTPUT_PULLDOWN | MUX_MODE2)	/* mii1_txd1.rgmii1_td1 */
    			0x128 (PIN_OUTPUT_PULLDOWN | MUX_MODE2)	/* mii1_txd0.rgmii1_td0 */
    			0x12c (PIN_OUTPUT_PULLDOWN | MUX_MODE2)	/* mii1_txclk.rgmii1_tclk */
    			0x130 (PIN_INPUT_PULLDOWN | MUX_MODE2)	/* mii1_rxclk.rgmii1_rclk */
    			0x134 (PIN_INPUT_PULLDOWN | MUX_MODE2)	/* mii1_rxd3.rgmii1_rd3 */
    			0x138 (PIN_INPUT_PULLDOWN | MUX_MODE2)	/* mii1_rxd2.rgmii1_rd2 */
    			0x13c (PIN_INPUT_PULLDOWN | MUX_MODE2)	/* mii1_rxd1.rgmii1_rd1 */
    			0x140 (PIN_INPUT_PULLDOWN | MUX_MODE2)	/* mii1_rxd0.rgmii1_rd0 */
    		>;
    	};
    
    	cpsw_sleep: cpsw_sleep {
    		pinctrl-single,pins = <
    			/* Slave 1 reset value */
    			0x114 (PIN_INPUT_PULLDOWN | MUX_MODE7)
    			0x118 (PIN_INPUT_PULLDOWN | MUX_MODE7)
    			0x11c (PIN_INPUT_PULLDOWN | MUX_MODE7)
    			0x120 (PIN_INPUT_PULLDOWN | MUX_MODE7)
    			0x124 (PIN_INPUT_PULLDOWN | MUX_MODE7)
    			0x128 (PIN_INPUT_PULLDOWN | MUX_MODE7)
    			0x12c (PIN_INPUT_PULLDOWN | MUX_MODE7)
    			0x130 (PIN_INPUT_PULLDOWN | MUX_MODE7)
    			0x134 (PIN_INPUT_PULLDOWN | MUX_MODE7)
    			0x138 (PIN_INPUT_PULLDOWN | MUX_MODE7)
    			0x13c (PIN_INPUT_PULLDOWN | MUX_MODE7)
    			0x140 (PIN_INPUT_PULLDOWN | MUX_MODE7)
    		>;
    	};
    
    	davinci_mdio_default: davinci_mdio_default {
    		pinctrl-single,pins = <
    			/* MDIO */
    			0x148 (PIN_INPUT_PULLUP | SLEWCTRL_FAST | MUX_MODE0)	/* mdio_data.mdio_data */
    			0x14c (PIN_OUTPUT_PULLUP | MUX_MODE0)			/* mdio_clk.mdio_clk */
    		>;
    	};
    
    	davinci_mdio_sleep: davinci_mdio_sleep {
    		pinctrl-single,pins = <
    			/* MDIO reset value */
    			0x148 (PIN_INPUT_PULLDOWN | MUX_MODE7)
    			0x14c (PIN_INPUT_PULLDOWN | MUX_MODE7)
    		>;
    	};
    
    	mmc1_pins: pinmux_mmc1_pins {
    		pinctrl-single,pins = <
    			0x160 (PIN_INPUT | MUX_MODE7) /* spi0_cs1.gpio0_6 */
    		>;
    	};
    
    	mmc3_pins: pinmux_mmc3_pins {
    		pinctrl-single,pins = <
    			0x44 (PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_a1.mmc2_dat0, INPUT_PULLUP | MODE3 */
    			0x48 (PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_a2.mmc2_dat1, INPUT_PULLUP | MODE3 */
    			0x4C (PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_a3.mmc2_dat2, INPUT_PULLUP | MODE3 */
    			0x78 (PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_ben1.mmc2_dat3, INPUT_PULLUP | MODE3 */
    			0x88 (PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_csn3.mmc2_cmd, INPUT_PULLUP | MODE3 */
    			0x8C (PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_clk.mmc2_clk, INPUT_PULLUP | MODE3 */
    		>;
    	};
    
    	wlan_pins: pinmux_wlan_pins {
    		pinctrl-single,pins = <
    			0x40 (PIN_OUTPUT_PULLDOWN | MUX_MODE7)	/* gpmc_a0.gpio1_16 */
    			0x19C (PIN_INPUT | MUX_MODE7)		/* mcasp0_ahclkr.gpio3_17 */
    			0x1AC (PIN_OUTPUT_PULLDOWN | MUX_MODE7)	/* mcasp0_ahclkx.gpio3_21 */
    		>;
    	};
    
    	lcd_pins_s0: lcd_pins_s0 {
    		pinctrl-single,pins = <
    			0x20 (PIN_OUTPUT | MUX_MODE1)		/* gpmc_ad8.lcd_data23 */
    			0x24 (PIN_OUTPUT | MUX_MODE1)		/* gpmc_ad9.lcd_data22 */
    			0x28 (PIN_OUTPUT | MUX_MODE1)		/* gpmc_ad10.lcd_data21 */
    			0x2c (PIN_OUTPUT | MUX_MODE1)		/* gpmc_ad11.lcd_data20 */
    			0x30 (PIN_OUTPUT | MUX_MODE1)		/* gpmc_ad12.lcd_data19 */
    			0x34 (PIN_OUTPUT | MUX_MODE1)		/* gpmc_ad13.lcd_data18 */
    			0x38 (PIN_OUTPUT | MUX_MODE1)		/* gpmc_ad14.lcd_data17 */
    			0x3c (PIN_OUTPUT | MUX_MODE1)		/* gpmc_ad15.lcd_data16 */
    			0xa0 (PIN_OUTPUT | MUX_MODE0)		/* lcd_data0.lcd_data0 */
    			0xa4 (PIN_OUTPUT | MUX_MODE0)		/* lcd_data1.lcd_data1 */
    			0xa8 (PIN_OUTPUT | MUX_MODE0)		/* lcd_data2.lcd_data2 */
    			0xac (PIN_OUTPUT | MUX_MODE0)		/* lcd_data3.lcd_data3 */
    			0xb0 (PIN_OUTPUT | MUX_MODE0)		/* lcd_data4.lcd_data4 */
    			0xb4 (PIN_OUTPUT | MUX_MODE0)		/* lcd_data5.lcd_data5 */
    			0xb8 (PIN_OUTPUT | MUX_MODE0)		/* lcd_data6.lcd_data6 */
    			0xbc (PIN_OUTPUT | MUX_MODE0)		/* lcd_data7.lcd_data7 */
    			0xc0 (PIN_OUTPUT | MUX_MODE0)		/* lcd_data8.lcd_data8 */
    			0xc4 (PIN_OUTPUT | MUX_MODE0)		/* lcd_data9.lcd_data9 */
    			0xc8 (PIN_OUTPUT | MUX_MODE0)		/* lcd_data10.lcd_data10 */
    			0xcc (PIN_OUTPUT | MUX_MODE0)		/* lcd_data11.lcd_data11 */
    			0xd0 (PIN_OUTPUT | MUX_MODE0)		/* lcd_data12.lcd_data12 */
    			0xd4 (PIN_OUTPUT | MUX_MODE0)		/* lcd_data13.lcd_data13 */
    			0xd8 (PIN_OUTPUT | MUX_MODE0)		/* lcd_data14.lcd_data14 */
    			0xdc (PIN_OUTPUT | MUX_MODE0)		/* lcd_data15.lcd_data15 */
    			0xe0 (PIN_OUTPUT | MUX_MODE0)		/* lcd_vsync.lcd_vsync */
    			0xe4 (PIN_OUTPUT | MUX_MODE0)		/* lcd_hsync.lcd_hsync */
    			0xe8 (PIN_OUTPUT | MUX_MODE0)		/* lcd_pclk.lcd_pclk */
    			0xec (PIN_OUTPUT | MUX_MODE0)		/* lcd_ac_bias_en.lcd_ac_bias_en */
    		>;
    	};
    
    	am335x_evm_audio_pins: am335x_evm_audio_pins {
    		pinctrl-single,pins = <
    			0x10c (PIN_INPUT_PULLDOWN | MUX_MODE4) /* mii1_crs.mcasp1_aclkx */
    			0x110 (PIN_INPUT_PULLDOWN | MUX_MODE4) /* mii1_rxerr.mcasp1_fsx */
    			0x108 (PIN_OUTPUT_PULLDOWN | MUX_MODE4) /* mii1_col.mcasp1_axr2 */
    			0x144 (PIN_INPUT_PULLDOWN | MUX_MODE4) /* rmii1_ref_clk.mcasp1_axr3 */
    		>;
    	};
    
    	dcan1_pins_default: dcan1_pins_default {
    		pinctrl-single,pins = <
    			0x168 (PIN_OUTPUT | MUX_MODE2) /* uart0_ctsn.d_can1_tx */
    			0x16c (PIN_INPUT_PULLDOWN | MUX_MODE2) /* uart0_rtsn.d_can1_rx */
    		>;
    	};
    };
    
    &uart0 {
    	pinctrl-names = "default";
    	pinctrl-0 = <&uart0_pins>;
    
    	status = "okay";
    };
    
    &uart1 {
    	pinctrl-names = "default";
    	pinctrl-0 = <&uart1_pins>;
    
    	status = "okay";
    };
    
    &i2c0 {
    	pinctrl-names = "default";
    	pinctrl-0 = <&i2c0_pins>;
    
    	status = "okay";
    	clock-frequency = <400000>;
    
    	tps: tps@2d {
    		reg = <0x2d>;
    	};
    };
    
    &usb {
    	status = "okay";
    };
    
    &usb_ctrl_mod {
    	status = "okay";
    };
    
    &usb0_phy {
    	status = "okay";
    };
    
    &usb1_phy {
    	status = "okay";
    };
    
    &usb0 {
    	status = "okay";
    };
    
    &usb1 {
    	status = "okay";
    	dr_mode = "host";
    };
    
    &cppi41dma  {
    	status = "okay";
    };
    
    &i2c1 {
    	pinctrl-names = "default";
    	pinctrl-0 = <&i2c1_pins>;
    
    	status = "okay";
    	clock-frequency = <100000>;
    
    	lis331dlh: lis331dlh@18 {
    		compatible = "st,lis331dlh", "st,lis3lv02d";
    		reg = <0x18>;
    		Vdd-supply = <&lis3_reg>;
    		Vdd_IO-supply = <&lis3_reg>;
    
    		st,click-single-x;
    		st,click-single-y;
    		st,click-single-z;
    		st,click-thresh-x = <10>;
    		st,click-thresh-y = <10>;
    		st,click-thresh-z = <10>;
    		st,irq1-click;
    		st,irq2-click;
    		st,wakeup-x-lo;
    		st,wakeup-x-hi;
    		st,wakeup-y-lo;
    		st,wakeup-y-hi;
    		st,wakeup-z-lo;
    		st,wakeup-z-hi;
    		st,min-limit-x = <120>;
    		st,min-limit-y = <120>;
    		st,min-limit-z = <140>;
    		st,max-limit-x = <550>;
    		st,max-limit-y = <550>;
    		st,max-limit-z = <750>;
    	};
    
    	tsl2550: tsl2550@39 {
    		compatible = "taos,tsl2550";
    		reg = <0x39>;
    	};
    
    	tmp275: tmp275@48 {
    		compatible = "ti,tmp275";
    		reg = <0x48>;
    	};
    
    	tlv320aic3106: tlv320aic3106@1b {
    		compatible = "ti,tlv320aic3106";
    		reg = <0x1b>;
    		status = "okay";
    
    		/* Regulators */
    		AVDD-supply = <&vaux2_reg>;
    		IOVDD-supply = <&vaux2_reg>;
    		DRVDD-supply = <&vaux2_reg>;
    		DVDD-supply = <&vbat>;
    	};
    };
    
    &lcdc {
    	status = "okay";
    };
    
    &elm {
    	status = "okay";
    };
    
    &epwmss0 {
    	status = "okay";
    
    	ecap0: ecap@100 {
    		status = "okay";
    		pinctrl-names = "default";
    		pinctrl-0 = <&ecap0_pins>;
    	};
    };
    
    &gpmc {
    	status = "okay";
    	pinctrl-names = "default";
    	pinctrl-0 = <&nandflash_pins_s0>;
    	ranges = <0 0 0x08000000 0x1000000>;	/* CS0: 16MB for NAND */
    	nand@0,0 {
    		reg = <0 0 4>; /* CS0, offset 0, IO size 4 */
    		ti,nand-ecc-opt = "bch8";
    		ti,elm-id = <&elm>;
    		nand-bus-width = <8>;
    		gpmc,device-width = <1>;
    		gpmc,sync-clk-ps = <0>;
    		gpmc,cs-on-ns = <0>;
    		gpmc,cs-rd-off-ns = <44>;
    		gpmc,cs-wr-off-ns = <44>;
    		gpmc,adv-on-ns = <6>;
    		gpmc,adv-rd-off-ns = <34>;
    		gpmc,adv-wr-off-ns = <44>;
    		gpmc,we-on-ns = <0>;
    		gpmc,we-off-ns = <40>;
    		gpmc,oe-on-ns = <0>;
    		gpmc,oe-off-ns = <54>;
    		gpmc,access-ns = <64>;
    		gpmc,rd-cycle-ns = <82>;
    		gpmc,wr-cycle-ns = <82>;
    		gpmc,wait-on-read = "true";
    		gpmc,wait-on-write = "true";
    		gpmc,bus-turnaround-ns = <0>;
    		gpmc,cycle2cycle-delay-ns = <0>;
    		gpmc,clk-activation-ns = <0>;
    		gpmc,wait-monitoring-ns = <0>;
    		gpmc,wr-access-ns = <40>;
    		gpmc,wr-data-mux-bus-ns = <0>;
    		/* MTD partition table */
    		/* All SPL-* partitions are sized to minimal length
    		 * which can be independently programmable. For
    		 * NAND flash this is equal to size of erase-block */
    		#address-cells = <1>;
    		#size-cells = <1>;
    		partition@0 {
    			label = "NAND.SPL";
    			reg = <0x00000000 0x000020000>;
    		};
    		partition@1 {
    			label = "NAND.SPL.backup1";
    			reg = <0x00020000 0x00020000>;
    		};
    		partition@2 {
    			label = "NAND.SPL.backup2";
    			reg = <0x00040000 0x00020000>;
    		};
    		partition@3 {
    			label = "NAND.SPL.backup3";
    			reg = <0x00060000 0x00020000>;
    		};
    		partition@4 {
    			label = "NAND.u-boot-spl-os";
    			reg = <0x00080000 0x00040000>;
    		};
    		partition@5 {
    			label = "NAND.u-boot";
    			reg = <0x000C0000 0x00100000>;
    		};
    		partition@6 {
    			label = "NAND.u-boot-env";
    			reg = <0x001C0000 0x00020000>;
    		};
    		partition@7 {
    			label = "NAND.u-boot-env.backup1";
    			reg = <0x001E0000 0x00020000>;
    		};
    		partition@8 {
    			label = "NAND.kernel";
    			reg = <0x00200000 0x00800000>;
    		};
    		partition@9 {
    			label = "NAND.file-system";
    			reg = <0x00A00000 0x0F600000>;
    		};
    	};
    };
    
    #include "tps65910.dtsi"
    
    &mcasp1 {
    		pinctrl-names = "default";
    		pinctrl-0 = <&am335x_evm_audio_pins>;
    
    		status = "okay";
    
    		op-mode = <0>;          /* MCASP_IIS_MODE */
    		tdm-slots = <2>;
    		/* 4 serializers */
    		serial-dir = <  /* 0: INACTIVE, 1: TX, 2: RX */
    			0 0 1 2
    		>;
    		tx-num-evt = <32>;
    		rx-num-evt = <32>;
    };
    
    &tps {
    	vcc1-supply = <&vbat>;
    	vcc2-supply = <&vbat>;
    	vcc3-supply = <&vbat>;
    	vcc4-supply = <&vbat>;
    	vcc5-supply = <&vbat>;
    	vcc6-supply = <&vbat>;
    	vcc7-supply = <&vbat>;
    	vccio-supply = <&vbat>;
    
    	regulators {
    		vrtc_reg: regulator@0 {
    			regulator-always-on;
    		};
    
    		vio_reg: regulator@1 {
    			regulator-always-on;
    		};
    
    		vdd1_reg: regulator@2 {
    			/* VDD_MPU voltage limits 0.95V - 1.26V with +/-4% tolerance */
    			regulator-name = "vdd_mpu";
    			regulator-min-microvolt = <912500>;
    			regulator-max-microvolt = <1312500>;
    			regulator-boot-on;
    			regulator-always-on;
    		};
    
    		vdd2_reg: regulator@3 {
    			/* VDD_CORE voltage limits 0.95V - 1.1V with +/-4% tolerance */
    			regulator-name = "vdd_core";
    			regulator-min-microvolt = <912500>;
    			regulator-max-microvolt = <1150000>;
    			regulator-boot-on;
    			regulator-always-on;
    		};
    
    		vdd3_reg: regulator@4 {
    			regulator-always-on;
    		};
    
    		vdig1_reg: regulator@5 {
    			regulator-always-on;
    		};
    
    		vdig2_reg: regulator@6 {
    			regulator-always-on;
    		};
    
    		vpll_reg: regulator@7 {
    			regulator-always-on;
    		};
    
    		vdac_reg: regulator@8 {
    			regulator-always-on;
    		};
    
    		vaux1_reg: regulator@9 {
    			regulator-always-on;
    		};
    
    		vaux2_reg: regulator@10 {
    			regulator-always-on;
    		};
    
    		vaux33_reg: regulator@11 {
    			regulator-always-on;
    		};
    
    		vmmc_reg: regulator@12 {
    			regulator-min-microvolt = <1800000>;
    			regulator-max-microvolt = <3300000>;
    			regulator-always-on;
    		};
    	};
    };
    
    &mac {
    	pinctrl-names = "default", "sleep";
    	pinctrl-0 = <&cpsw_default>;
    	pinctrl-1 = <&cpsw_sleep>;
    	status = "okay";
    	slaves = <1>;
    };
    
    &davinci_mdio {
    	pinctrl-names = "default", "sleep";
    	pinctrl-0 = <&davinci_mdio_default>;
    	pinctrl-1 = <&davinci_mdio_sleep>;
    	status = "okay";
    
    	ethphy0: ethernet-phy@0 {
    		reg = <0>;
    	};
    };
    
    &cpsw_emac0 {
    	phy-handle = <&ethphy0>;
    	phy-mode = "rgmii-id";
    };
    
    &tscadc {
    	status = "okay";
    	tsc {
    		ti,wires = <4>;
    		ti,x-plate-resistance = <200>;
    		ti,coordinate-readouts = <5>;
    		ti,wire-config = <0x00 0x11 0x22 0x33>;
    		ti,charge-delay = <0x400>;
    	};
    
    	adc {
    		ti,adc-channels = <4 5 6 7>;
    	};
    };
    
    &mmc1 {
    	status = "okay";
    	vmmc-supply = <&vmmc_reg>;
    	bus-width = <4>;
    	pinctrl-names = "default";
    	pinctrl-0 = <&mmc1_pins>;
    	cd-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
    };
    
    &mmc3 {
    	/* these are on the crossbar and are outlined in the
    	   xbar-event-map element */
    	dmas = <&edma 12 0
    		&edma 13 0>;
    	dma-names = "tx", "rx";
    	status = "okay";
    	vmmc-supply = <&wlan_en_reg>;
    	bus-width = <4>;
    	pinctrl-names = "default";
    	pinctrl-0 = <&mmc3_pins &wlan_pins>;
    	ti,non-removable;
    	ti,needs-special-hs-handling;
    	cap-power-off-card;
    	keep-power-in-suspend;
    
    	#address-cells = <1>;
    	#size-cells = <0>;
    	wlcore: wlcore@0 {
    		compatible = "ti,wl1835";
    		reg = <2>;
    		interrupt-parent = <&gpio3>;
    		interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
    	};
    };
    
    &edma {
    	ti,edma-xbar-event-map = /bits/ 16 <1 12
    					    2 13>;
    };
    
    &sham {
    	status = "okay";
    };
    
    &aes {
    	status = "okay";
    };
    
    &dcan1 {
    	status = "disabled";	/* Enable only if Profile 1 is selected */
    	pinctrl-names = "default";
    	pinctrl-0 = <&dcan1_pins_default>;
    };
    
    &rtc {
    	clocks = <&clk_32768_ck>, <&clk_24mhz_clkctrl AM3_CLK_24MHZ_CLKDIV32K_CLKCTRL 0>;
    	clock-names = "ext-clk", "int-clk";
    };
    

    In our device tree the 

    * NAND flash this is equal to size of erase-block */

    #address-cells = <1>;

    #size-cells = <1>;

    partition@0 {

    label = "NAND.SPL";

    reg = <0x00000000 0x000020000>;

    };

    partition@1 {

    label = "NAND.SPL.backup1";

    reg = <0x00020000 0x00020000>;

    };

    partition@2 {

    label = "NAND.SPL.backup2";

    reg = <0x00040000 0x00020000>;

    };

    partition@3 {

    label = "NAND.SPL.backup3";

    reg = <0x00060000 0x00020000>;

    };

    partition@4 {

    label = "NAND.u-boot-spl-os";

    reg = <0x00080000 0x00040000>;

    };

    partition@5 {

    label = "NAND.u-boot";

    reg = <0x000C0000 0x00100000>;

    };

    partition@6 {

    label = "NAND.u-boot-env";

    reg = <0x001C0000 0x00020000>;

    };

    partition@7 {

    label = "NAND.u-boot-env.backup1";

    reg = <0x001E0000 0x00020000>;

    };

    partition@8 {

    label = "NAND.kernel";

    reg = <0x00200000 0x00800000>;

    };

    partition@9 {

    label = "NAND.file-system";

    reg = <0x00A00000 0x0F600000>;

    };

    };


    is missing. Trying to boot with spl from sdcard. Is this section important?



  • The section on GPMC/NAND in DT is not relevant on booting SPL from SD.
    Best,
    -Hong